| FAQ
#2 |
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Frequently
Asked Questions About Rose
Cutting Propagation
by Dennis Whitzel. (adapted
from the May-June 2000 MRS Newsletter)
Click here
to download this FAQ in Adobe Acrobat PDF format. |
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Propagating you favorite roses from cuttings
is easy and fun. However, be sure you are not violating any patents
by increasing your roses by vegitative cuttings. Many modern roses
are covered by patents and any form of reproduction is prohibited.
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QUICK
LINKS:
- What materials and tools are needed for cuttings?
- How do I take rose bush cuttings?
- How do I plant the cuttings?
- What about watering and feeding my new cuttings?
- What do I do when the cuttings begin to leaf out?
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| 1. What materials and tools
are needed for cuttings |
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Plastic
nursery pots - One-gallon size (6.75 inches x 7.25 inches) works
well, preferably with side drainage holes;
- Rooting medium - A 50/50 mixture of pH5 unscented kitty litter
(I use Hartz) and horticultural grade perlite, or A 50/50 mixture of
peat moss and coarse sand (builder’s sand), moistened and mixed
thoroughly. Any coarse-textured commercial potting soil, such as Metro-Mix
360, will work also. Good aeration and water-holding capacity are important.
You may pasteurize the medium by moistening, covering and baking in
an oven at 180 degrees F for 35-40 minutes (start timing when medium
reaches 180 degrees);
- Plastic bags - Gallon size (11" x 13") clear polyethylene
food storage bag with a twist tie;
- Plastic Plant Labels - Write the date and name of the rose with a
#2 lead pencil;
- A razor-sharp knife
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| 2. How do I take rose bush cuttings? |
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Take cuttings from stems that have flowered,
just after the petals have fallen, but before new growth begins from the
leaf buds. Cuttings should contain about four to six nodes (leaf buds).
Trim about one-half inch above the top node and the same below the bottom
node. Remove leaves from the lower half of each cutting. Leave two or
three at the top (cuttings with leaves tend to root more successfully).
Using a razor-sharp blade make two or three
VERY shallow vertical cuts on the lower end (one inch or so) of each cutting.
Cut only through the bark, not into the wood. If you choose to use a rooting
hormone powder such as RooTone, dip the end of the cutting into water,
then into the powder, shaking off the excess.
Glue for Pruning Cuts: We all use
some kind of glue or sealer on canes larger than a pencil when we make
a pruning cut or cut a bloom. Lew Waggaman has found a glue which is “water
proof” rather than just “water resistant,” like Elmer’s
glue. The name of the glue is Titebond II and probably can be found at
most hardware stores; Lew purchased his at Ace Hardware. Thank you, Lew.
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| 3. How do I plant the cuttings? |
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Fill the pot with medium to about one inch from the top. Insert several
clean bamboo stakes or other props in the center of the pot to keep the
plastic bag from resting directly on the cuttings. Make holes in the medium
with a pencil. Each hole should be large enough to insert a cutting without
scraping off the rooting hormone and deep enough to insert it about half
its length. Place the cutting in the hole you just made. Firm the medium
around the cutting.
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This cutting is covered with a plastic bag to maintain
high humdity, preventing the cutting from wilting.
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| 4. What about watering and feeding
my new cuttings? |
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Water the cuttings gently but thoroughly to settle
them in (excessive watering will wash out some of the rooting hormone). Insert
the plant label and place the bag over the cuttings, gather it around
the rim of the pot, and fasten with the twist tie. Using a pencil, punch
about six small holes in the plastic bag for ventilation. Enlarge the
holes if there is too much condensation inside the bag. If there is no
condensation, close off some of the holes with tape. Humidity inside the
bag must be high.
Place the pots outdoors in fairly heavy
shade, but do not exclude the sunlight. Light will hasten rooting, but
direct sunlight will overheat the cuttings and kill them. Do not place
the pot near air conditioner compressors or in other hot windy areas.
Make sure the pot drainage holes are not blocked. Air must circulate through
the drainage holes and through the holes in the bag. No additional watering
will be needed unless the medium becomes dry. DO NOT FERTILIZE UNTIL ROOTED.
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| 5. What do I do when
the cuttings begin to leaf out? |
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In a few weeks, the new leaf buds will begin. If this growth continues
to develop and/or roots appear at the drainage holes, then cuttings have
begun to root. After about six to eight weeks, cuttings should be rooted
well enough to pot individually. Keep them protected in pots until they
have made good growth and then plant them out in the garden. I usually
heel the pots in a protected area or cold frame for the first winter and
then plant them in their permanent spot in the spring.
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updated
April 30, 2003
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